Wells view

The well data input section is used to describe the wells to the ECLIPSE™ simulator.  All the data entered in this section can change over the simulation run. There are many types of data that can be specified.  At a minimum, the well configuration, completions, and constraints must be specified. The completions represent the path of the well completion through the grid and can be connected to the upstream workflow through the survey stacks.

Unlike other spreadsheet views featured in the application, the Wells view is not configured using a master table. Instead, most tables on the view have Well and Time columns.

Well  Well name.  Must be 8 characters or less.

Time  Time that the well data is implemented.

The context menu for the Well view contains the following commands:

Update All Wells  Update the well completions and the well constraints from the upstream workflow for all connected wells.

Update Well  Update the well completions and well constraints from the upstream workflow for the selected wells.

Wells tab

The first tab on the Well view contains the Well table.  The Well table is a master list of all wells in the simulation case.  It also describes connections from each well to the upstream workflow.

Active  When checked indicates that well is active.  An inactive well is not written to the deck.

JewelSuite Source Well Name of the well in JewelSuite in the upstream workflow. Delete entry if the source well is not connected to the well in simulation model.

Name  Name of the well.

WI Method  Well Index method

PI  If checked, indicates PI calculation is to be made from upstream workflow.

Historical Data Well historical production data to which well is connected.

Historical Data Well Well name in the historical production data to which well is connected.

Oil Prod  Name of the variable in well history to use for oil production constraint.

Gas Prod  Name of the variable in well history to use for gas production constraint.

Water Prod  Name of the variable in well history to use for water production constraint.

Inj Rate  Name of the variable in well history to use for injection rate constraint.

BHP  Name of the variable in well history to use for BHP constraint.

THP  Name of the variable in well history to use for THP constraint.

Uptime Name of the variable in well history to use for WEFAC constraint.

Comment  Description of well.

Well Specification tab

The Well Specification Tab of the Well Data view contains elements related to the configuration of the wells. Configuration data can change over time but is general defined at time 0 and does not change frequently.

Date/Time  The starting time of the well.

Well name  The name of the well.

Group  Well group to which this well belongs.

I  X Location of well head or heel.

J  Y Location of well head of heel.

Zref  Reference depth for bottom hole pressure.

Phase  Preferred phase for well.

To edit this column delete the "Source" well assigned to this well on the Wells tab. When a "Source" well is assigned, the phase is picked up from the "Source" well (Views > Well Table > States > Phase).

Drainage Radius  Drainage radius for PI calculation.

Inflow Equation  Special inflow equation. See ECLIPSE™ Reference Manual, 2005 A_1, Schlumberger, www.slb.com.

Shutin  Instructions for automatic shut-in.  Either STOP or SHUT.

Crossflow  Allow crossflow in well.  Either YES or NO.

PVT  PVT table number for fluid calculations.

Head Calc  Type of density calculation for hydrostatic head.  Either SEG or AVG.

FIP  FIP region for calculation of fluid flow at reservoir conditions.

Well Parameters tab

The Well Parameters tab is used to define various miscellaneous well keywords.

Date/Time  The date and time at which the keywords are reported for the well.

Well  The name of the well.

QDRILL The wells are placed in the sequential drilling queue, to be opened in sequence.

WEFAC  Well efficiency factor. This is the fractional time for which the well is operational.

WELPRI  Sets well priority numbers.

Well Perforation tab

The tables on the Well Completion tab are used to define completions for each well. This tab uses a master table configuration where the master record contains well and time which are used to select the detail table containing the list of completions for the well.

I, J, K1, K2  Grid location of the completion.

Status  Status of the completion.  One of OPEN, STOP, SHUT, AUTO.  Optional.

Sat Table #  RelPerm table to use for well calculations.  Optional.

Transmissibility factor  Performance index of the perforation.  Optional.  Calculated by simulator if not used.

Diameter  Wellbore diameter at the connection.

Kh  Effective Kh of the connection.

To edit this column delete the ‘Source’ well assigned to this well on the Wells tab. When a "Source" well is assigned, the Well Index values are automatically calculated using the parameters defined for the ‘Source’ well.

Skin  Skin factor. Optional.

D-factor  Non-darcy flow factor.

Direction  Direction in which well penetrates grid block.  One of X, Y, Z, FX, FY.

Ro  Pressure equivalent radius.

Shut/Reopen Wells tab

The Shut/Reopen Wells tab is used to open and close wells and completions.

Date/Time  The starting time of the well.

Well Name  The name of the well.

Status  One of OPEN, SHUT, STOP, AUTO

I,J,K  Location of completion to act on.  Optional.

Last  Last completion number in range.

First  First completion number in range.

Production Well Control tab

The Production Well Control tab is used to define constraints for each production well.

Date/Time  The starting time of the well.

Well name  The name of the well.

Status  Status of the well.  One of OPEN, STOP, SHUT, AUTO

Control  Controlling constraint of the well. ORAT, GRAT, WRAT most common. See ECLIPSE™ Reference Manual, 2005 A_1, Schlumberger, www.slb.com.

QOIL  Oil phase flow constraint.

QWAT  Water phase flow constraint.

QGAS  Gas phase flow constraint.

QLIQ  Liquid phase flow constraint.

QRES  Reservoir fluid flow constraint.

BHP  Bottom hole pressure constraint.

THP  Tubing head pressure constraint.

VFP  Vertical flow performance table.

GasLift  Artificial lift quantity for use in lift table calculations.

QWG  Wet gas flow constraint.

QMOL  Molar flow constraint.

Injection Well Control tab

The Injection Well Control tab is used to define constraints for each injection well.

Date/Time  The starting time of the well.

Well name  The name of the well.

Type  One of WATER, GAS, STEAM-GAS, OIL.

Status  Status of the well.  One of OPEN, STOP, SHUT, AUTO.

Control  Controlling constraint of the well.  RATE most common.  See ECLIPSE™ Reference Manual, 2005 A_1, Schlumberger, www.slb.com.

Qstd  Fluid flow constraint at standard conditions.

Qres  Fluid flow constraint at reservoir conditions.

BHP  Bottom hole pressure constraint.

THP  Tubing head pressure constraint.

VFP  Vertical flow performance table.

Rs  Vaporized oil in injected gas or dissolved gas in the injected oil.

Production History Matching tab

The Production History Matching tab is used to define constraints for historical production wells.

Date/Time  The starting time of the well.

Well name  The name of the well.

Status  Status of the well.  One of OPEN, STOP, SHUT, AUTO

Control  Controlling constraint of the well. ORAT, GRAT, WRAT most common. See ECLIPSE™ Reference Manual, 2005 A_1, Schlumberger, www.slb.com.

QOIL  Oil phase flow constraint.

QWAT  Water phase flow constraint.

QGAS  Gas phase flow constraint.

VFP  Vertical flow performance table.

GasLift  Artificial lift quantity for use in lift table calculations.

THP  Tubing head pressure constraint.

BHP  Bottom hole pressure constraint.

QWG  Wet gas flow constraint.

Injection History Matching tab

The Injection History Matching tab is used to define observed rates for history matching injection wells.

Date/Time  The starting time of the well.

Well  The name of the well.

Type  WATER, GAS or OIL.

Status  OPEN, STOP or SHUT

Qstd  Observed injection rate.

BHP  Observed bottom hole pressure.

THP  Observed tubing head pressure.

VFP  Injection well VFP table number.

Rs  Vaporized oil concentration in the injected gas or dissolved gas concentration in the injected oil.

Well Limits - Cutback tab

The Well Limits - Cutback tab is used to define well cutback limits for producers and injectors.

Date/Time  The starting time of the well.

Well  The name of the well.

Max WCUT  Water cut upper limit for cutback.

Max GOR  Gas/oil ratio upper limit for cutback.

Max GLR  Gas/liquid ratio upper limit for cutback.

Max WGR  Water/gas ratio upper limit for cutback.

Cutback Factor  Ratio of reduced flow to the current flow.

Phase  One of OIL, WAT, GAS, LIQ, RESV, WGAS.

Cutback Grid Pressure  Grid block pressure for well cutback.

Reverse Cutback Grid Pressure  Upper limit of grid block pressure to reverse cutback.

Min WCUT  Water cut lower limit to reverse cutback.

Min GOR  Gas/oil ratio lower limit to reverse cutback.

Min WGR  Water/gas ratio lower limit to reverse cutback.

Remove Cutbacks  If checked, cutbacks are removed when well is worked over.

Well Limits - Economic tab

The Well Limits - Economic tab is used to define economic limit data for production wells.

Date/Time  The starting time of the well.

Well  The name of the well.

Min QOIL  Minimum oil production rate.

Min QGAS  Minimum gas production rate

Max WCUT  Maximum water cut.

Max GOR  Maximum GOR.

Max GWR  Maximum GWR.

Procedure  Workover procedure.  One of NONE, CON, +CON, WELL, PLUG.

End Run?  Simulation run ends if well is shut in or stopped.

Follow On Well  Name of well to open when this well is shut.

Well Limits - Bottom Hole GLR tab

The Well Limits – Bottom Hole GLR tab is used to define well limits on bottom hole gas liquid ratio. Max GLR - Upper limit on well GLR for well cutback.

Date/Time  The starting time of the well.

Well Name  The name of the well.

Max GLR  Upper limit on well GLR for well cutback.

Min GLR  Lower limit on well GLR for well cutback.

Cutback Factor  Ratio of the reduced flows to the current flows.

Phase  Control phase.  One of OIL, WAT, GAS, LIQ, RESV

Econ Limit  Max bottom hole GLR economic limit.

Procedure  Workover procedure. One of NONE, CON, +CON, WELL, PLUG

Remove Cutbacks?  When checked removes cutback limit after well workover.

Injection Gas tab

The Injection Gas tab is used to define the injection fluid for the gas injectors.

Date/Time  The starting time of the well.

Well Name  The name of the well.

Fluid  Fluid type.  Most common is STREAM which indicates that injection is from a well stream. See ECLIPSE™ Reference Manual, 2005 A_1, Schlumberger, www.slb.com.

Parameter  Specification of fluid type. For STREAM, the stream name.

Make Up Gas  Stream name of gas to make up injection target if a separator is the source of the gas.

Sep Stage  Stage of separator to take injection gas if a separator is the source of the gas.

Injection Gas Composition tab

The Injection Gas Composition tab is used to define injected gas composition for gas injectors. Used for EOS simulations only. The columns represent mole fractions of each component in the component table.

Well Separator Conditions tab

The Well Separator Conditions tab of the Well Data view is used to connect wells to separators at specific times.

Date/Time  The starting time of the well.

Well Name  The name of the well.

Sep  Name of separator to connect to well.